I think that if there is rule that one word can't be posted the thing can be automated, there is no need to have moderators for that.
If there are moderators to look into it they should act as human beings, not as robots blindly applying the rules.
"Great!" - can be just "the general chit chat" for someone who is "not a big fan of small talk", but when he is on the Communities service his personal preferences shouldn't matter that much.
The Goethe's tragedy Faust (in case someone knows what's I'm speaking about) finishes with just one word "Saved!" and that word make the tragedy a great masterpiece without which it wouldn't probably be that.
The Bitcoin code finishes also with just on word, but without that word it wouldn't be usable either.
It was days we were trying to find a solution of an issue and I specifically asked the person we were trying to help whether he has solved. Once he's answered in a relatively positive way I answered him "Great!" because it was a logical conclusion of the discussion we were doing, for me it's just normal to be polite with people, of course I could've dropped the discussion without answering anything, but I feel I'd be rude in that context if I wouldn't answer anything to that person. It's like if someone asks me "How are you?" and I keep silent because the rule imposes me to not use just one word "Fine".
I think if the rule is equal for all just make in the way I can't post one word, if the moderator is there to contribute as a human being he has to understand the context before automatically applying the rule. If not he is just another bot here.
I'm being constantly moderated here though, not because of short replies or rude posts or anything specific, just for no reason. At least it's how I feel it.
Imagine your months-old post still getting deleted from time to time. The mods really have to achieve the quota

And there was a time I got banned without realizing what I did wrong (reason was generic) only to find out weeks later that it was a thread I posted that was "flagged" for reflink spamming.